Title :
3.7 A 7Gb/s rapid on/off embedded-clock serial-link transceiver with 20ns power-on time, 740μW off-state power for energy-proportional links in 65nm CMOS
Author :
Anand, Tejasvi ; Talegaonkar, Mrunmay ; Elkholy, Ahmed ; Saxena, Saurabh ; Elshazly, Amr ; Hanumolu, Pavan Kumar
Author_Institution :
Univ. of Illinois, Urbana, IL, USA
Abstract :
Energy-proportional operation of serial links is imperative for realizing energy-efficient data centers and low-power mobile interfaces such as MIPI. Burst-mode communication, where the link is powered-off when idle and powered-on when needed, achieves energy proportional operation. Ideally, a burst mode link must be turned on/off in zero time, must consume zero power in the off-state and must incur zero energy overhead while making on/off transitions. However, these requirements are difficult to meet in practice and as a consequence, the efficacy of burst mode communication in achieving energy proportional operation is reduced. The main challenges in achieving small power-on time and off-state power include the design of fast-locking PLLs, CDRs and achieving fast settling of bias node voltages. In this paper, we present a complete 7Gb/s energy-proportional embedded-clock transceiver that achieves less than 20ns power-on time while consuming 63.7mW on-state power, 0.74mW off-state power and 1.2nJ of total transition energy penalty per burst.
Keywords :
CMOS integrated circuits; clocks; computer centres; mobile radio; phase locked loops; radio transceivers; CMOS integrated circut; PLL; burst-mode communication; data centers; energy-proportional embedded-clock transceiver; energy-proportional links; fast-locking phase locked loop; mobile interfaces; power 0.74 mW; power 63.7 mW; rapid on-off embedded-clock; serial-link transceiver; size 65 nm; time 20 ns; zero energy overhead; Clocks; Energy efficiency; Generators; Phase locked loops; Receivers; Transceivers; Transmitters;
Conference_Titel :
Solid- State Circuits Conference - (ISSCC), 2015 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4799-6223-5
DOI :
10.1109/ISSCC.2015.7062927
